轻微脑功能障碍综合征(Minimal Brain Dysfunction syndrome,简称MBD)是一种常见的儿童行为障碍综合征,其主要特点为,活动过多、易激动、注意力不集中、智力正常而学习不好、以及神经系统有轻微异常体征。其发病率在儿童中占4—20％,一般报告为学龄儿童的10％。男孩明显多于女孩,约为3—9:1。国外精神科门诊的患儿中约一半患此征。早在本世纪初即有关于儿童行为异常和学习问题的报导,从脑损害的角度来认识自20年代开始。第 Minimal Brain Dysfunction syndrome (MBD) is a common childhood behavioral disorders syndrome, its main features are: hyperactivity, irritability, inattention, normal intelligence and poor learning, And the nervous system has slight abnormal signs. The incidence is 4-20% of children and is generally reported as 10% of school-age children. Significantly more boys than girls, about 3-9: 1. About half of children with psychiatric outpatients abroad have this sign. As early as the beginning of this century, there have been reports of abnormal behavior and learning problems in children and from the perspective of brain damage since the 1920s. No.